Backup considerations for other products

If you are using IBM MQ with CICS® or IMS then you must also consider the implications for your backup strategy with those products. The data facility hierarchical storage manager (DFHSM) manages data storage, and can interact with the storage used by IBM MQ.

Backup and recovery with DFHSM

The data facility hierarchical storage manager (DFHSM) does automatic space-availability and data-availability management among storage devices in your system. If we use it, you need to know that it moves data to and from the IBM MQ storage automatically.

DFHSM manages your DASD space efficiently by moving data sets that have not been used recently to alternative storage. It also makes your data available for recovery by automatically copying new or changed data sets to tape or DASD backup volumes. It can delete data sets, or move them to another device. Its operations occur daily, at a specified time, and allow for keeping a data set for a predetermined period before deleting or moving it.

We can also perform all DFHSM operations manually. The Data Facility Hierarchical Storage Manager User's Guide explains how to use the DFHSM commands. If we use DFHSM with IBM MQ, note that DFHSM does the following:

• Uses cataloged data sets.
• Operates on page sets and logs.
• Supports VSAM data sets.

Recovery and CICS

The recovery of CICS resources is not affected by the presence of IBM MQ. CICS recognizes IBM MQ as a non-CICS resource (or external resource manager), and includes IBM MQ as a participant in any syncpoint coordination requests using the CICS resource manager interface (RMI). For more information about CICS recovery, see the CICS Recovery and Restart Guide. For information about the CICS resource manager interface, see the CICS Customization Guide.

Recovery and IMS

IMS recognizes IBM MQ as an external subsystem and as a participant in syncpoint coordination. IMS recovery for external subsystem resources is described in the IMS Customization Guide.